QST5TR Equivalent & Substitute Parts Reference

Part Overview

The Rohm Semiconductor QST5TR is a PNP Bipolar Junction Transistor (BJT) in the Transistors, Bipolar (BJT) category. It features a maximum collector current of 2 A, a collector-emitter breakdown voltage of 30 V, transition frequency of 280 MHz, and a maximum power dissipation of 1.25 W. The component is supplied in a surface-mount TSMT6 (SC-95) package and is ROHS3 compliant. The product status is "Not For New Designs." It is necessary to identify alternative models to address supply continuity and design-in requirements, as QST5TR is not recommended for new designs.

Key Parameters

Parameter	QST5TR
Manufacturer	Rohm Semiconductor
Transistor Type	PNP
Current - Collector (Ic) (Max)	2 A
Voltage - Collector Emitter Breakdown (Max)	30 V
Vce Saturation (Max) @ Ib, Ic	370mV @ 75mA, 1.5A
Current - Collector Cutoff (Max)	100nA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce	270 @ 200mA, 2V
Power - Max	1.25 W
Frequency - Transition	280MHz
Operating Temperature	150°C (TJ)
Mounting Type	Surface Mount
Package / Case	SOT-23-6 Thin, TSOT-23-6
Supplier Device Package	TSMT6 (SC-95)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute parts for QST5TR are determined by strict electrical and mechanical equivalence in the following key parameters: Transistor Type (PNP), Collector Current (Ic) Maximum, Collector-Emitter Breakdown Voltage, Vce Saturation (maximum and test conditions), Collector Cutoff Current, DC Current Gain (minimum and test conditions), Power Dissipation, Transition Frequency, Operating Temperature, Surface Mount Package compatibility, RoHS and REACH compliance, and Moisture Sensitivity Level. Only parts that match or exceed these parameters in all relevant fields are eligible as equivalents.

Parameter Comparison

Parameter	QST5TR	NSS35200MR6T1G	PBSS4032PD,115	SNSS35200MR6T1G
Manufacturer	Rohm Semiconductor	onsemi	NXP Semiconductors	onsemi
Transistor Type	PNP	PNP	PNP	PNP
Current - Collector (Ic) (Max)	2 A	2 A	2.7 A	2 A
Voltage - Collector Emitter Breakdown (Max)	30 V	35 V	30 V	35 V
Vce Saturation (Max) @ Ib, Ic	370mV @ 75mA, 1.5A	310mV @ 20mA, 2A	395mV @ 300mA, 3A	310mV @ 20mA, 2A
Current - Collector Cutoff (Max)	100nA (ICBO)	100nA	100nA	100nA
DC Current Gain (hFE) (Min) @ Ic, Vce	270 @ 200mA, 2V	100 @ 1.5A, 1.5V	200 @ 1A, 2V	100 @ 1.5A, 1.5V
Power - Max	1.25 W	625 mW	1 W	625 mW
Frequency - Transition	280MHz	100MHz	104MHz	100MHz
Operating Temperature	150°C (TJ)	-55°C ~ 150°C (TJ)	150°C (TJ)	-
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SOT-23-6 Thin, TSOT-23-6	SOT-23-6 Thin, TSOT-23-6	SC-74, SOT-457	SOT-23-6 Thin, TSOT-23-6
Supplier Device Package	TSMT6 (SC-95)	6-TSOP	6-TSOP	6-TSOP
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	-	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Not For New Designs	Obsolete	Active	Obsolete

Engineering Selection Recommendations

When selecting substitutes for QST5TR, consider product status and compliance data as provided. NSS35200MR6T1G and SNSS35200MR6T1G are listed as obsolete, which impacts long-term sourcing reliability. PBSS4032PD,115 is listed as active. All substitutes provided are ROHS3 compliant and REACH unaffected where specified. All parts have a Moisture Sensitivity Level (MSL) of 1 (Unlimited), supporting standard PCB assembly processes.

Frequently Asked Questions (FAQ)

Q1: What are the key parameters when selecting an equivalent to QST5TR?
Key parameters are transistor type (PNP), collector current (Ic) maximum, collector-emitter breakdown voltage (Vce), Vce saturation voltage at specified test conditions, DC current gain (hFE), frequency transition, power dissipation, package type, RoHS compliance, REACH status, and moisture sensitivity level.

Q2: Can package differences affect substitutability?
Yes. QST5TR uses the SOT-23-6 Thin, TSOT-23-6 (TSMT6 SC-95) package. Substitute parts listed use either the same or similar 6-lead SMT packages. Mechanical compatibility should be validated based on package outlines defined in the provided data.

Q3: Are all substitute parts compliant with RoHS and REACH?
QST5TR, NSS35200MR6T1G, and SNSS35200MR6T1G are indicated as ROHS3 compliant and REACH unaffected. PBSS4032PD,115 is REACH unaffected and has MSL 1, but RoHS status is not specified in the provided data.

Q4: Are there differences in product status among the substitutes?
Yes. PBSS4032PD,115 is listed as active. NSS35200MR6T1G and SNSS35200MR6T1G are listed as obsolete. QST5TR is not for new designs. This impacts availability and selection for new designs and ongoing production.

Q5: What should be considered regarding electrical performance compatibility?
Substitute parts match or exceed the collector current, breakdown voltage, and basic performance metrics as provided. Differences in current gain, transition frequency, and package may affect circuit behavior; only provided parameters should be referenced for substitution decisions.

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